Prius will showdown the engine when you stop at red light, so no gas would be consumped and no idle noise would be generated.

• "一般人还忘了柴油车还有一优点就是怠速的时候比汽油车还要省油(我忘了是几倍,但好像是满多倍的,这在常塞车的都市中,算是一个小小优点)"